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Run: 2026-05-20-01KS25X1T972STE9Q6DWJBSM3Z
Run Details
Model:
Gemini 3.5 Flash (Reasoning, Minimal)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
1.6s
Cost:
$0.001272
Provider:
Google AI Studio
Evaluation summary
Score
Evaluator
Details Link
60.65%
Matches word count
(details)
Model input
User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 words. Please make sure that each sentence has the same length. Only return the opening itself.
Model response
Messages
Meta
AI
The grandfather clock struck midnight, sending a shiver through the quiet library where the wealthy old man lay motionless. Cold rain lashed violently against the tall glass windows while a single candle flickered on the polished mahogany desk. Sir Reginald sat frozen in his favorite leather armchair, his eyes staring blankly at the ornate, high ceiling above. A dark, sticky pool of fresh blood slowly pooled on the Persian rug beneath his dangling, lifeless left hand. Then, the heavy oak door creaked open, revealing a shadowed figure holding a tarnished silver key in their hand. No one in the grand manor heard the soft footsteps that escaped into the foggy, silent night quite undetected.
created_at
"2026-05-20T07:51:46.254Z"
5/20/2026, 7:51:46 AM
model
"google/gemini-3.5-flash-20260519"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
729
moderation_latency
(null)
generation_time
1507
tokens_prompt
46
tokens_completion
176
native_tokens_prompt
38
native_tokens_completion
135
native_tokens_completion_images
0
native_tokens_reasoning
0
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"STOP"
service_tier
"standard"
usage
0.001272
router
(null)
provider_responses
0
endpoint_id
"bd50061c-e1d8-469e-96b1-d322e77378f8"
id
"EmgNatS3GOWqjMcP9s36wAE"
is_byok
false
latency
728
model_permaslug
"google/gemini-3.5-flash-20260519"
provider_name
"Google AI Studio"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.15.0; linux; x64))"
http_referer
(null)
request_id
"req-1779263506-jxG8Sy6mvdnYGDv9ZVU1"
session_id
(null)
api_type
"completions"
id
"gen-1779263506-4z18VEl2l9cH0quLYywx"
upstream_id
"EmgNatS3GOWqjMcP9s36wAE"
total_cost
0.001272
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
60.65%
Matches word count
n/a
neededClean
false
sentences
6
wordCounts
0
19
1
19
2
19
3
19
4
19
5
19